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Let the GPS and custom watermarks be rotated

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This commit is contained in:
Lộc Phạm
2026-09-10 15:56:06 +07:00
parent 2911dd57f0
commit 6595e5cbc1
4 changed files with 81 additions and 19 deletions
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src/components/AdjustmentPanel.tsx
+13
View File
@@ -64,6 +64,10 @@ interface AdjustmentPanelProps {
onCancelCustomWm: () => void;
// Bumped by a double-tap on the mark: put the caret back in the text input.
wmEditNonce: number;
// WATERMARK tab ROTATE chip: clockwise degrees (0/90/180/270) applied to both
// the GPS lines and the custom text, in the preview and in the export.
wmRotation: number;
onRotateWm: () => void;
}
interface ChipDef {
@@ -146,6 +150,8 @@ export default function AdjustmentPanel({
onCancelCustomWm,
wmEditNonce,
onToggleRotation,
wmRotation,
onRotateWm,
}: AdjustmentPanelProps) {
// Double-tap on the mark in the viewfinder bumps wmEditNonce -> focus the
// input again so the text can be retyped after the keyboard was dismissed.
@@ -524,6 +530,13 @@ export default function AdjustmentPanel({
active: customWm.enabled,
onPress: () => onUpdateCustomWm({ ...customWm, enabled: !customWm.enabled }),
})}
{(useGeotag || customWm.enabled) &&
renderChip({
key: 'wm-rotate',
label: `ROTATE ${wmRotation}°`,
active: wmRotation !== 0,
onPress: onRotateWm,
})}
{customWm.enabled &&
renderChip({
key: 'custom-wm-accept',
src/components/Viewfinder.tsx
+45 -19
View File
@@ -105,6 +105,10 @@ interface ViewfinderProps {
y: number;
};
onWmPositionChange?: (x: number, y: number) => void;
// WATERMARK tab ROTATE chip: clockwise degrees (0/90/180/270). Rotates the
// custom text AND the GPS lines around their own anchors — same angle the
// export burns in.
wmRotation?: number;
// True while the WATERMARK panel is open — that panel IS the mark's edit
// session. The mark draws whenever the CUSTOM chip is ON with text, but it
// only CAPTURES image touches (placement drags in camera mode, click-through
@@ -196,6 +200,7 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
onWmEdit,
wmEditing = false,
photoRotation = 0,
wmRotation = 0,
}: ViewfinderProps,
ref
) {
@@ -1113,6 +1118,19 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
if (mode === 'library' && imageFitRect) return imageFitRect;
return { dx: 0, dy: 0, dw: vw, dh: vh };
};
// The drawn mark's baseline origin. Everything that has to agree with the
// glyphs — the render, the double-tap box, the export — goes through here,
// and the ROTATE chip spins around this same point.
const wmAnchor = () => {
const area = wmArea();
const fracX = wmDragPos?.x ?? customWm.x;
const fracY = wmDragPos?.y ?? customWm.y;
return {
ax: area.dx + fracX * area.dw,
ay: area.dy + fracY * area.dh + Math.round(wmFontSize * 0.35),
};
};
const wmRad = (wmRotation * Math.PI) / 180;
const wmFontSize = Math.round(vw * 0.032 * (customWm.size ?? 1));
const wmColor = customWm.color ?? '#f59e0b';
// FONT chip: an OS family resolved through the platform font manager; no
@@ -1154,24 +1172,31 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
// so a double-tap ON the text re-opens the editor instead of moving it.
const wmBox = () => {
if (!wmVisible || !wmFont) return null;
const area = wmArea();
const fracX = wmDragPos?.x ?? customWm.x;
const fracY = wmDragPos?.y ?? customWm.y;
const tx = area.dx + fracX * area.dw;
const ty = area.dy + fracY * area.dh + Math.round(wmFontSize * 0.35);
const { ax, ay } = wmAnchor();
const w = Math.max(wmFont.measureText(customWm.text.trim()).width, wmFontSize * 2);
return { x: tx, y: ty - wmFontSize, w, h: Math.round(wmFontSize * 1.4) };
return { x: ax, y: ay - wmFontSize, w, h: Math.round(wmFontSize * 1.4) };
};
const wmBoxHit = (
box: { x: number; y: number; w: number; h: number } | null,
x: number,
y: number
) =>
!!box &&
x >= box.x - 8 &&
x <= box.x + box.w + 8 &&
y >= box.y - 8 &&
y <= box.y + box.h + 8;
) => {
if (!box) return false;
// A rotated mark needs the tap un-spun around the same anchor, otherwise
// the box stops covering the visible glyphs.
if (wmRotation) {
const { ax, ay } = wmAnchor();
const c = Math.cos(-wmRad);
const s = Math.sin(-wmRad);
const dx = x - ax;
const dy = y - ay;
x = ax + dx * c - dy * s;
y = ay + dx * s + dy * c;
}
return (
x >= box.x - 8 && x <= box.x + box.w + 8 && y >= box.y - 8 && y <= box.y + box.h + 8
);
};
// Library framed (polaroid/wall) returns reuse the SAME responder handlers as
// plain library (see the framed JSX below): single-finger drags place/move
// the text watermark while armed, and otherwise DRAG the photo inside the
@@ -1464,15 +1489,13 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
const renderCustomWatermark = () => {
if (!wmVisible || !wmFont) return null;
const area = wmArea();
const fracX = wmDragPos?.x ?? customWm.x;
const fracY = wmDragPos?.y ?? customWm.y;
// Baseline = dragged anchor + ~0.35em drop (the grabbed anchor reads as the
// text's visual center). Must match exportEngine step 8's formula.
const tx = area.dx + fracX * area.dw;
const ty = area.dy + fracY * area.dh + Math.round(wmFontSize * 0.35);
const { ax, ay } = wmAnchor();
return (
<SkiaText x={tx} y={ty} text={customWm.text.trim()} font={wmFont} color={wmColor} />
<Group origin={{ x: ax, y: ay }} transform={wmRotation ? [{ rotate: wmRad }] : undefined}>
<SkiaText x={ax} y={ay} text={customWm.text.trim()} font={wmFont} color={wmColor} />
</Group>
);
};
@@ -1530,7 +1553,10 @@ const Viewfinder = forwardRef<ViewfinderHandle, ViewfinderProps>(function Viewfi
const camW = iconFont.measureText('📷');
return (
<Group>
<Group
origin={{ x: xOffset, y: topBase }}
transform={wmRotation ? [{ rotate: wmRad }] : undefined}
>
{/* Icons white so they read as glyphs, not part of the amber text */}
<SkiaText x={xOffset} y={row1Y} text="📍" font={iconFont} color="#ffffff" />
<SkiaText x={xOffset + gap(pinW.width)} y={row1Y} text={locationName} font={customFont} color="#f59e0b" />
src/utils/exportEngine.ts
+14
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@@ -46,6 +46,10 @@ export interface ExportOptions {
size?: number;
font?: string | null;
} | null;
// WATERMARK tab ROTATE chip: clockwise degrees (0/90/180/270) applied to
// BOTH the GPS lines and the custom text, each around its own anchor (the
// same anchor Viewfinder rotates around, so the preview matches the file).
watermarkRotation?: number;
// Library framed-window photo reposition (Viewfinder.getFrameWindowZoom):
// after pinch/drag inside a polaroid card window or a wall-frame opening,
// s = scale and u/v = the fraction of the photo's cover plane sitting at the
@@ -596,10 +600,16 @@ export async function processAndExportPhoto(
baseY = stampH - fontSize * 1.5;
}
// Spin the whole two-line block around its top-left (the anchor the
// viewfinder uses). 0 = the historical upright look.
const wmRot = options?.watermarkRotation ?? 0;
stampCanvas.save();
if (wmRot) stampCanvas.rotate(wmRot, baseX, baseY - Math.round(fontSize * 2.4));
stampCanvas.drawText('📍', baseX, baseY - fontSize * 1.4, iconPaint, iconFont);
stampCanvas.drawText(locationName, baseX + gap, baseY - fontSize * 1.4, textPaint, font);
stampCanvas.drawText('📷', baseX, baseY, iconPaint, iconFont);
stampCanvas.drawText(timestampStr, baseX + gap, baseY, textPaint, font);
stampCanvas.restore();
}
// Custom watermark: baseline at the dragged fraction of the photo/window
@@ -623,7 +633,11 @@ export async function processAndExportPhoto(
wmPaint.setColor(Skia.Color(customWm.color ?? '#f59e0b'));
const tx = area.dx + clamp01(customWm.x) * area.dw;
const ty = area.dy + clamp01(customWm.y) * area.dh + Math.round(wmSize * 0.35);
const wmRot = options?.watermarkRotation ?? 0;
stampCanvas.save();
if (wmRot) stampCanvas.rotate(wmRot, tx, ty);
stampCanvas.drawText(customWm.text, tx, ty, wmPaint, wmFont);
stampCanvas.restore();
}
}
}